Elevator.



Patented July 30, I90], 0. L. STABTUP.

ELEVATOR.

(LApplimfinn fllad Apr. 5, 1901,)

(No Model.)

7/2 JIM/E ran 1 B) ATTORNEYS WITNESSES UNTTED STATES PATENT OFFICE.

CHARLES L. STARTUP, OF ELLENVILLE, NElV YORK.

ELEVATOR.

$PECIFICATION forming part of Letters Patent No. 679,484., dated July30, 1901.

Application filed April 5, 1901.

T ctZZ whom it may concern:

Be it known that I, CHARLES L. STARTUP, a citizen of the United States,residing at Ellenville, in the county of Ulster and State of New York,have invented certain new and useful Improvements in Elevators, of whichthe following is a full and complete specification, such as will enablethose skilled in the art to which it appertains to make and use thesame.

This invention relates to elevators; and the object thereof is toprovide an elevator-car with attachments which will operate in the caseof an accident or if the rope or cable breaks to prevent the falling ofthe car.

With this and other objects in view the invention consists in theconstruction, combination, and arrangement of parts hereinafterdescribed and claimed.

The invention is fully disclosed in the following specification, ofwhich the accompanying drawings form apart, in which the separate partsof my improvement are designated by the same reference characters ineach of the views, and in which Figure 1 is a side view of anelevator-car and the vertical corner guide-post thereof constructedaccording to my invention; Fig. 2, a bottom plan view of the car, thecorner guide-post between which the car moves being shown in section.

In the drawings forming part of this specification I have shown at 5 thecorner guideposts, between which the elevator-car moves, and at 6 theelevator-car, and the bottom of this car is provided at a predetermineddistance from each side thereof with a transverse bar '7 and at eachsidelwith a laterallymovable locking-bar 8, and these lockingbars 8 areprovided at each end with a pin 9, and said pins operate in connectionwith ratchet-teeth 10, formed on or secured to the post 5. Between eachof the stationary bottom bars 7 and the corresponding laterallymovablelocking-bars 8 is placed a strong plate-spring 11, and these springsoperate to force the lockingdoars 8 outwardly, and at the ends of thebars 8 are transverse guidepieces 12, between which and the bottom ofthe car the locking-bars 8 move. Pivoted to each of the bars 7 at 13 aretwo levers 14,

Serial No. 5 1,432. No model.)

and the outer ends of these levers are pivotally connected with links15, which are pivoted to the locking-bars 8 at 16, and connected withthe inner ends of each set of the levers 14: is a flexible device 17,with each of which is connected a rope, cord, cable, or other flexibledevice 18.

The elevator-car 6 is provided at its opposite side, centrally thereof,and at the top and bottom thereof with pulley-wheels 19, and the ropesor other flexible devices 18 are passed upwardly around thesepulley-wheels and connected with the car-supporting cable 20 at 21, andsaid car-supporting cable 20 passes over pulleys 22 in the top of theelevator-shaft in the usual manner. The cable 20 is also connected withthe top of the car, centrally thereof, as shown at 23, and that portionof said cable between the points 21 and 23 whichis designated by thereference character 20 is of such length that in the operation of thecar the ropes or cables 18 are drawn tight against the operation of thesprings 11 before said part 20 of the cable 20 is drawn taut. In otherwords, a portion of the weight of the car in the operation thereof isplaced on the ropes or cables 18, so as to withdraw the locking-bars 8out of engagement with the ratchet-teeth 10, and in this position of theparts the car will move up and down in the elevator-shaft between thecorner guideposts 5 in the usual manner. If in this operation the cable20 should at any time be broken, the springs 11 will at once operate tothrow out the locking-bars 8, and the latter would engage with theratchet-teeth and stop the descent of the car; but as long as the cableremains in working order, to gether with the ropes or cables 18, thelockingbars 8 will be held in the position shown in dotted lines in Fig.2 and will not operate to prevent the downward movement of the car.

It will thus be seen that I provide a safety attachment forelevator-cars which is simple in construction and operation and which isparticularly designed to prevent the falling of the car if the cablewhich supports it should break, and by means of this construc* tion Iprevent the serious and sometimes fatal accidents which frequentlyaccompany the breaking of the elevator-cable.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination with an elevator-car, provided with the usualsupporting-cable, of laterally-movable spring-operated lockingbarsmounted on the bottom of the car, levers pivotally supported beneath thebottom of the car and connected with said locking-bars and flexibledevices connected with said 1evers and passing upwardly around the carand connected with the supporting-cable, substantially as shown anddescribed.

2. The combination with an elevator-car, provided with the usualsupporting-cable, of laterally movable spring operated lockingbarsmounted on the bottom of the car, levers pivotally supported beneath thebottom of the car, and connected with said locking-bars and flexibledevices connected with said levers and passing upwardly around the carand connected with the supporting-cable,said

locking-bars being adapted to operate in connection with corner-posts inthe elevatorshaft provided with ratchet-teeth, substantially as shownand described.

3. The combination with the vertical guideposts of an elevator-car,which are provided with ratchet-teeth, of an elevator-car,lockingbarsadapted to be brought into connection with said ratchet-teeth, springsactuating the locking-bar, levers for actuating the lockingbar, andflexible devices connected with said levers passing up around the carand connecting with The supporting-cable of the car, substantially asshown and described.

In testimony that I claim the foregoing as my invention 1 have-signed myname, in presence of the subscribing witnesses, this 21st day ofJanuary, 1901.

CHARLES L. STARTUP.

WVitness'es:

J OSEPH RosoH, J r., ISAAC A. Coon.

